Movable grid for filling stop motion



Nov. 29, 1927. i',651,11e E. J. DACEY ET AL .MOVABLE GRID FOR FILLING STOP MOTION Filed p 29, 1925 2 Sheets-Sheet 1 Ea wm r1 Baggy M/fiom Ra e/L am Nov. 29, 1927.

- E. J. DAcEY ET AL 110 113111: GRID FOR FILLING STOP mono Filed Sept. 29, 1925 2 Sheets-Sheet 2 Patented Nov. 29, 1927.

umrsn STATES PATENT OFFICE.

EDWARD J. IDACEY AND 'WILLIAIVI V7. ROBERTSON, OF WORCESTER, MASSACHUSETTS, ASSIGNORS 'IO. CROMPTON AND KIIOWLES LGOM "WORKS, OF WORCESTER, MASSA CHUSETTS, A CORPORATION 03 MASSACHUSETTS.

MOVABLE GRID F6331 FILLING STGP- MOTIQN.

Application filed September Our invention relates to filling stop mo tions for looms and it is the general object of the invention to provide an improved grid mechanism by means of which the loom may be stopped earlier than is possible with slide.

. tail of the fork and move the slide forwardly to stop the loom. The snakehead is timed to have its forward movement when the lay is at its'extreme forward position and the stopping of the loom therefore necessarily is effected at some point on the backward stroke of the lay.

When the fault in the filling occurs in certain types of looms it is highly desirable to stop the loom before the lay starts on its backward motion and it is a more particular object of our invention to provide mechanism for moving the filling forward of the reed line so as to actuate the fork and permit the stopping of the loom before the lay reaches its extreme forward position.

Vie have chosen to illustrate our invention in connection with a double shuttle loom and it is a still further object of our invention to provide a filling stop motion having a pair of forks each having a separate action but both being interconnected so that if either indicates presence of weft both will be moved to permit continuedoperation of the loom.

/Vith these and other objects in view which will appear as the description pro ceeds, our invention resides in the combination and arrangement of parts hereinafter described and set forth in the claims.

In the accompanying drawings wherein we have shown a convenient embodiment of our invention,

Fig. 1 is a front elevation of a loom having our invention applied thereto with certain parts removed for the sake of clearness,

29, 1925. Serial No. 59,413.

Fig. 2 is a side elevation taken in the direction of arrow 2, Fig. 1 with certain parts removed,

Fig. 3 is a top plan view taken in the direction of arrow 3, Fig. 2 certain parts bebroken away,

Figs. 4, 5, and 6 are fragmentary views similar to F ig. 2 showing the parts. in dif fereiit operating positions, and

Fig. 7 is an enlarged detailed elevation taken in the dir ction of arrow 7, Fig. 4.

Referring to the drawings it will be seen that we have provided a loom frame 10 having pivotally mounted therein a lay 11 mounted on swords 12. A connector 131eciprocates the lay and any preferred form of picking mechanism (notshown) maybe employed to actuate the'shuttles S and S. The lay is provided wit-h a pair of boxes B and B at each end thereof which receive the shuttles S and S, respectively, the upper shuttle S passing through the top shed and the lower shuttle Spassing through the lower shed of the double fabric. lVhen shuttle S is on the right hand side of the loom shuttle'S' will be on the left handside, and vice versa, both being picked at the same time and passing one over the other in the sheds so that there is always one shuttle on each side of the lay when the latter approaches its forward position. The shuttles S and S lay filling or weft 7' and W, respectively.

Secured to the frame 10 is a cam 14 having a downwardly and b'ackwardly inclined cam face 15 positioned'to engage a roll 16 rotatably mounted on the forwardly extending arm of a lever 17 secured to shaft 18. Said shaft extends between and is rotatably mounted on the swords 12. Tho-upper end of lever 17 is slotted as at 19 to receive the pin 20 of a rock lever 21 pivoted. as at 22 to a fixed part of the lay behind the reed 23. The end of shaft 18 remote from lever 17 has secured thereto a second lever 24 to the for wardly extending arm of which is secured the upper end of a spring 25 the lower end of which is connected as at 26 to one of the swords 12. The upper end of. lever-2e is slotted in a manner similart'o lever 17 and cooperates with a second rock lever. 27 mounted on the other lay sword 12. Each of said rock levers has secured thereto a grid 28 normally behind the reed 23 but proportioned to extend forwardly of the reed line.

From the matter thus far described it will be understood that as the lay 11 moves forwardly roll 16 will rise on cam to rock shaft 18 in a counter-clockwise direction the effect of which will be to move the grids 28 forwardly from the position shown in Fig. 2 to the position shown in Fig. 4, where it will be seen that the grid lies forwardly of the reed line to move the weft threads toward the filling stop motion to be described hereinafter.

Breast beam 29 has rotatably mounted therein a rock shaft 30 extending across the loom. Levers 31, one at each side of the breast beam, are freely rotatable on the shaft 30 and have depending arms 32 operatively positioned with respect to the upper ends of levers 33 secured to a cross shaft 34. An arm 35 secured to the cross shaft 34 has attached thereto a connector 36 which is normally held in rear position by spring 37 and is movable forwardly to stop the loom by connections not shown.

Each of said arms 31 has pivotally mounted thereon a pair of filling forks, the upper fork 38 being pivoted at 39 and the lower fork 40 being pivoted at 41. As shown in Fig. 7 the upper fork 38 has secured thereto a pair of wires 42 and 43 which pass under and over, respectively, the forward exten ,sion of fork 40. The forward extension of each of the forks 38 and 40 is provided with a hook 44 positioned to be engaged by a snake head 45 when the latter moves forwardly and the forks are not tilted. Said snake heads are'secured to rock shafts 30 and are actuable by rod 46 pivoted to a depending arm of one of the snake heads and timed to move the latter forwardly while the lay is still an appreciable distance from its forward position.

Because of the arrangement. of the Wires 42 and 43 it will be understood that if fork 38 is tilted wire 42 will raise fork 40 so that both of the hooks 44 will be raised out of the path of snake head 45 whereas if fork 40 is moved forwardly by weft it will act through wire 43 to raise the forward end of the fork it will engage the hooks 44 and the forward ends of the forks will move the su oporting lever 31 to the position shown 1n Fig. 5 resulting 1n a forward movement of rod 36 and stoppage of the loom. Because of the early indication given to the forks the loom can be stopped before the lay passesfront center and starts its rearward movement, a condition which is peculiarly desirable in double shuttle looms.

e find that it is desirable to provide cam 14 with a recess 47 on the upper face thereof to receive roll 16 immediately before the lay reaches its extreme forward position to move the grids 28 rearwardlyso that they will not damage or be damaged by the sup ports for the forks as shown in Fig. 6. The indication necessary to stop the loom is given before the roll 16 reaches the depression 47 so that the rearward movement of said glids does not in any way interfere with the effectiveness of the motion to stop the loom at the absence of weft. Ears 48, one on each lever 31, en 'age the breast beam 29 to support said levers 31 and position the forks.

From the foregoing it will be seen that We have provided a filling stop motion so coI1- structed and timed as to stop the loom before the lay reaches its forward position. Ne have not shown the driving mechanism for the loom but it is to be understood that if a very' quick stopping is desired brakes may be employed. It will further be. noted that the members of each pair of filling forks are interconnected in such'a way that the tilting of one is accompanied by a tilting of the other even though the other be notrocked by advancing weft. be noted that as a precautionary measure to prevent breakage we provide for a backward movement of the grids as the lay reaches its extreme forward position. v

' Having thus described our invention it will be apparent that changes and modifications may be made therein by those skilled in the art without departing from the spirit and scope of the invention, and we do not wish to be limited to the" details herein disclosed butwhat we claim is: i

1. In a filling stop motion for looms having a lay and a reed defining a reed line, a

It will further tiltable filling fork, means tostop the loom- I when the filling fork is not tilted, a grid pivotally mounted on the lay behind the reed, and means operative on the forward stroke of the lay to move said grid from behind the reed line to a position in front of the reed line to present the filling to the fork before the lay reaches the limit of its forward movement.

2. In a filling stop motion. for looms having a lay and a reed defining a reed line, a tiltable filling fork, means to stop the loom when the filling fork'is not tilted, a grid pivotally mountedon the lay behind the reed, and means operative on the forward stroke of the lay to move said grid from behind the reed line to a position in front of the reed line to present the filling to the fork before the layv reaches the limit of 1ts forward movement and means to move the grid backwardly with respect to the reed line as the lay reaches the extreme limit of its forward movement.

3. In a filling stop motion for looms provided with a lay having a beating up movement and a reed defining a reed line, a filling fork to be acted upon by the weft as the lay has its beating up movement, means to stop the loom when the fork is not acted upon by the weft on the beating up movement of the lay, a grid normally lying behind the reed line, means acting as the lay beats up to move said grid forwardly from behind the reed to a position in front of the reed line to engage the weft and move the same forwardly toward the fork in advance of the reed line before the lay reaches the limit of its forward movement.

at. In a filling stop motion for looms hav ing a pair of shuttles each movable in a different path across the loom, a pair of spaced tiltable filling forks each having its own range of action and each tiltable by theweft laid by one of the shuttles, means to stop the loom when the forks are not tilted, and interconnections between said forks to cause both of said forks to move when only one of them is tilted by weft laid by the shuttle corresponding thereto.

5. In a filling stop motion for a loom having a pair of shuttles normally in flight at the same time, a pair of movable forks to be acted on by the weft at a predetermined period in the cycle of the loom, a regularly moving actuator to Cooperate with the forks when the latter are not acted on by the weft at said predetermined period in the cycle of the loom, and interconnections between said forks whereby if one of the said forks is acted on by weft and the other is not both of said forks will be moved out of the path of the regularly moving actuator.

6. In a filling stop motion for a loom having two shuttleswhich are in flight at the same time and movable in different paths across the'lay of the loom, a pair of spaced filling forks each having its own range of action and each movable by the weft laid by one of the shuttles, means to stop the loom when the forks are not tilted by weft on the beatin up movement of the lay, and interconnections between said forks to cause both of said forks to move when only one of them is moved by weft laid by the shuttle corresponding thereto.

7. In a filling stop motion for a loom hav ing a pair of shuttles normally in flight at the same time and movable across the lay of. the loom in opposite directions, a pair of interconnected movable filling forks, each fork having its own range of action and each movable by the weft laid by one of the shuttles, means to stop the loom when the forl are not moved by the weft on the beating up movement of the lay, said forks being so connected that when one of them is moved by weft the other will also be moved.

8. In a loom having a pair of shuttles normally moving at the same time and in opposite directions, a pair of filling forks located at each side of the loom and each fork being movable by weft laid by a shuttle, a regularly moving actuator for each pair of forks, the forks of each pair being connected so that if one of the pair is acted on by weft'both forks of said pair will be moved out of operative position with respect to the actuator, and'means to stop the loom when the forks of either pair are not acted on by weft to move out of the path of the actuator. p

In testimony whereof we have hereunto afiixed our signatures.

EDWARD J. DACEY. WILLIAM IV. ROBERTSON. 

